Not so much sterotype but more of an unnatural state.
Racism in America seems to me to be culturally taught, though we are all bred at the same school, and church.
The joke is the place where current culture meets the road of daily existence.
Sit around a fire 6 people deep at night camping, most likely neither church nor school will come up, but collective stories will.
Some scary, some fiction, some historical, some funny.
Stories, and Jokes etc…, have always shaped human behaviour.
A die of sorts, made by man for man himself.
